Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
20004excellentexcellent11excellent
19002excellentexcellent11excellent
18001excellentexcellent11excellent
17001excellentexcellent11excellent
16002excellentexcellent11excellent
15001excellentexcellent11excellent
14002excellentexcellent11excellent
13006excellentexcellent11excellent
120011excellentexcellent21excellent
110013excellentexcellent11excellent
100042goodexcellent11excellent
090021goodexcellent11excellent
080020excellentexcellent11excellent
070012excellentexcellent11excellent
060012excellentexcellent21excellent
050017excellentexcellent11excellent
040021goodexcellent21excellent
030019excellentexcellent21excellent
020020excellentexcellent21excellent
010026goodexcellent21excellent
000016excellentexcellent21excellent
230020excellentexcellent21excellent
220012excellentexcellent11excellent
21006excellentexcellent11excellent